1. The physiography of Southern Ontario;Chapman,1951
2. Weathered zones of the driftsheets of Illinois;Leighton;J. Geol.,1930
3. Geochemistry of carbonate sediments and sedimentary carbonate rocks. Part I. Carbonate mineralogy, carbonate sediments;Graf;Illinois State Geol. Surv. Circular 297,1960
4. Geochemistry of carbonate sediments and sedimentary carbonate rocks. Part II. Sedimentary carbonate rocks;Graf;Illinois State Geol. Surv. Circular 298,1960
5. Geochemistry of carbonate sediments and sedimentary carbonate rocks. Part IV-B. Bibliography;Graf;Illinois State Geol. Circular 309,1960